false vs frank

false

adv
  • In a dishonest and disloyal way; falsely. 

verb
  • To incorrectly decode noise as if it were a valid signal. 

adj
  • Not essential or permanent, as parts of a structure which are temporary or supplemental. 

  • Out of tune. 

  • Based on factually incorrect premises. 

  • Used in the vernacular name of a species (or group of species) together with the name of another species to which it is similar in appearance. 

  • Untrue, not factual, factually incorrect. 

  • Uttering falsehood; dishonest or deceitful. 

  • Not well founded; not firm or trustworthy; erroneous. 

  • Spurious, artificial. 

  • Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous. 

noun
  • One of two options on a true-or-false test. 

frank

verb
  • To exempt from charge for postage, as a letter, package, or packet, etc. 

  • To shut up in a frank or sty; to pen up; hence, to cram; to fatten. 

  • To place a frank on an envelope. 

  • To send by public conveyance free of expense. 

noun
  • The notice on an envelope where a stamp would normally be found. 

  • A hot dog or sausage. 

  • The grey heron. 

  • A pigsty. 

  • Free postage, a right exercised by governments (usually with definite article). 

adj
  • unmistakable, clinically obvious, self-evident 

  • honest, especially in a manner that seems slightly blunt; candid; not reserved or disguised. 

How often have the words false and frank occurred in a corpus of books? (source: Google Ngram Viewer )